com.alibaba.fastjson

Class TypeReference<T>

java.lang.Object

com.alibaba.fastjson.TypeReference<T>

public class TypeReference<T>
extends Object

Represents a generic type T. Java doesn't yet provide a way to represent generic types, so this class does. Forces clients to create a subclass of this class which enables retrieval the type information even at runtime.

For example, to create a type literal for List<String>, you can create an empty anonymous inner class:

 TypeReference<List<String>> list = new TypeReference<List<String>>() {};
 

This syntax cannot be used to create type literals that have wildcard parameters, such as Class<?> or List<? extends CharSequence>.

Field Summary

Fields

Modifier and Type	Field and Description
static Type	LIST_STRING
protected Type	type

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	TypeReference() Constructs a new type literal.
protected	TypeReference(Type... actualTypeArguments)

Method Summary

Modifier and Type	Method and Description
Type	getType() Gets underlying Type instance.
static Type	intern(ParameterizedTypeImpl type)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

type

protected final Type type

LIST_STRING

public static final Type LIST_STRING

Constructor Detail

TypeReference

protected TypeReference()

Constructs a new type literal. Derives represented class from type parameter.

Clients create an empty anonymous subclass. Doing so embeds the type parameter in the anonymous class's type hierarchy so we can reconstitute it at runtime despite erasure.

TypeReference

protected TypeReference(Type... actualTypeArguments)

Parameters:

actualTypeArguments -

Since:

1.2.9

Method Detail

intern

public static Type intern(ParameterizedTypeImpl type)

getType

public Type getType()

Gets underlying Type instance.